<!DOCTYPE html>
<html lang='en'>

<head>
   <meta charset='UTF-8'>
   <meta http-equiv='X-UA-Compatible' content='IE=edge'>
   <meta name='viewport' content='width=device-width, initial-scale=1.0'>
   <title>Document</title>
   <script src='../vue.js'></script>
</head>

<body>
   <div id='app'>
      <div style="width:100px;height:100px;background:red"></div>
      <div :style="divStyle"></div>
      <div :style="divStyleArr"></div>
      <div style="width:100px;height:100px" :style="{background:baColor}"></div>
   </div>

   <script>
      Vue.config.productionTip = false;

      const vm = new Vue({
      el: '#app',
         data() {
            return {
               divStyle: {
                  width: '100px',
                  height: '100px',
                  background: 'green'
               },
               divStyleArr: [{
                  width: "200px",
               }, {
                  height: "100px"
               }, {
                  background: "pink"
               }],
               baColor: 'blue'
            }
         }
      })
   </script>
</body>

</html>